Losing an abusive parent must be a complicated set of feelings to deal with. One of my best friend went through this with their own mom, and talking about how that kind of grief unfolded was really eye-opening for me.
My friend felt a lot of anger, confusion, and frustration along with the sadness for not only the loss itself, but the loss of all the memories they COULD have had if their mom was mentally well/not abusive. I wish you the very best and I'm glad you're stepping back a bit to heal. Love to you and Sophie <3